Astudent measured the amount of oxygen and carbon dioxide dissolved in an aquarium containing an aquatic plant and a snail. why did the amount of dissolved oxygen decrease when the aquarium was kept in the dark for 10 hours? a. because photosynthesis could not occur  b. because the plant died  c. because the snail died  d. because cellular respiration could not occur

Provide one reason why mitosis occurs.

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

Ateam from new york presbyterian hospital is conducting a study about a recent increase in cases involving both excess sweating and kidney stones. what would the team need before it draws a conclusion about the cases? medications that are specifically designed to treat the sickness machines that are built to process blood and reduce symptoms until patients are healthy again data that profile the various patients who report these symptoms proof that the excess sweating is related to the excessive kidney stones